Forgiving someone might not erase painful memories, but it can subtly update them, making past hurts feel less upsetting. It’s less “forgive and forget,” and more “forgive and update.”
Psychologists have long known that forgiveness is crucial for healing rifts and keeping social bonds strong. Folk wisdom even advises us to “forgive and forget” after a wrong, implying that saying you forgive someone should make the bad memory vanish.
But forgiving doesn’t actually make you forget, notes Duke neuroscientist Felipe de Brigard: “When you forgive someone for a wrongdoing, you don’t forget the event. But once you forgive, the memory doesn’t hurt as much.” Indeed, past studies hinted that forgiving someone can blunt the memory of their misdeed. What hasn’t been clear is how that happens in the brain. Is the memory simply erased, or does it get rewritten?
A new twist on an old idea
To test this, researchers staged a simple forgiveness experiment under an fMRI scanner. Volunteers watched a series of pictures that another person (a target) had supposedly chosen for them. Most pictures were upsetting (for example, scenes of threatening animals), so each time the volunteer saw a harsh image, they thought, “This person must be trying to upset me.”
Your brain’s memory files aren’t erased by forgiveness, they’re simply re-filed with less sting
Halfway through, the volunteer learned that one target had a reason for picking the bad pictures, and even apologized for it, while the other target showed no remorse. Then, the volunteers were told to try to forgive the apologetic person, but to simply keep looking at the other person’s choices without forgiving. Still in the scanner, they rated how negative each image felt while mentally forgiving one target and merely observing the other.
The next day, participants returned to rate all the same images again. The result was clear: the unpleasant pictures associated with the forgiven target were judged less negative on the second day than before, and significantly more so than the pictures linked to the non-forgiven target. In other words, forgiving someone in the lab made yesterday’s bad memory feel a little less bad today; the effect persisted a day later.
Inside the forgiving brain
What was happening in the mind to cause this change? The fMRI scans pointed to two key brain areas lighting up during these forgiveness trials. One was the dorsomedial prefrontal cortex (DMPFC), a region known for “mentalizing,” thinking about another person’s perspective and intentions. The other was the posterior hippocampus, a zone crucial for storing detailed episodic memories. https://sciencex.com/news/2026-05-brain-doesnt-painful-memories.html
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